Ments



(No'ModeL) 3 Sheets-Sheet 1.

M. G. BUNNELL. MAGHINBFOR MAKING AND REPAIRING ROADS. No. 455,704.Patented July 7,1891.

(No Model.) 3 Sheets-Sheet 2.

, BUNNELL.

MAGHINE FOR MAKING AND REPAIRING ROADS.

No. 455,704. Patented July 7,-1891;

(-No Mddel.) a sheets-sh et 3. M. G. BUNNELL. MAGHINE FOR MAKING ANDREPAIRING ROADS.

Patented July '7, 1891.

llll-llllllllllllllllflllllilllllllllllIIill\lllllllllilillllmllllllliilliHimilh i i flil1 ;IlIll"Illlllllllllllllllllllllll UNITED STATES PATENTOFFICE.

MORTON G. BUN NELL, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO ANNA B. AUSTIN, OF SAME PLACE.

MACHINE FOR MAKING AND REPAIRING ROADS.

SPECIFICATION forming part of Letters Patent No. 455,704, dated July 7,1891. I Application filed October 27, 1890. Serial No. 3 69.2 .62. (Nomodel.)

To all whom it may concern: the body-frame and suspended therefrom by Beit known that I, MORTON G. BUNNELL, a suitable raising and loweringdevices. The citizen of the United States, residing at Ohiblade isarranged to extend across the width cago, in the county of Cook andState of Illiof the machine, and is pivotally held between 5 nois, haveinvented a certain new and useful its ends, so that it can be swunghorizontally Improvement'in Machines for Making and about its verticalcenter or thereabout, for Repairing Roads, of which the following is athe purposeof placing it more orless oblique specification. to the lineof progression of the machine.

My invention relates to a construction of The devices for raising andlowering the 1o road-making and road-repairing machines inblade may beof any suitable construction, volving a long scraper-blade arrangedbelow but are understood to permit an attendant on the body-frame andadjustable so that it can the machine to raise and lower the blade bodbeset more or less oblique to the line of proily, and also to lower theforward end of the gression, and a horizontally swinging rear blade toan extent proportional to the re- I5 axle which is pivot-ally connectedwith the quired depth of cut.

body-frame and adjustable about its said piv- XVhile the scraper-bladecould be pushed otal connection, so that it can be set at diffrom therear of the machine and pivoted beferent angles to the length of thebody-frame tween its ends in various ways, I prefer to with reference tothe position of the blade draw it by means of a swinging draft-bar O 20and the work that is to be performed. and to connect it with aiurn-table or circle The object of my invention is to provide D,which ispivotally connected with the draft novel, simple, powerful, andotherwise imbar at apoint sufliciently forward of the rear proved meansfor adjusting the horizontallywheels to allow the blade to be swunghoriswinging rear axle about its pivoted conneczontally either way, andthereby permit its 2 5 tion with the body-frame; and to the attainendsto be alternately placed ahead.

ment of these and other useful ends it con- The body-frame of themachine is pivotally sists in matters hereinafter set forth, andparsupported upon the front axle, so that, while ticularly pointed outin the claims. the front axle E, which is supported by wheels In theaccompanying drawings, Figure 1 6, can be turned independently of thebody- 30 represents in side elevation a road-making frame for thepurposeof turning the machine, and road-repairing machine embodying my thebody-frame can be swung to either side invention. Fig. 2 represents thelong scraperindependently of the front axle. blade. Fig. 3 represents,on asomewhat larger The body-frame is, at its rear end portion scalethan the preceding figures, a top plan pivotally supported upon the longrear axle S5 35 view of the rear portion of the machine, the F, which isextended beyond the sides of the 0 long rear axle being, for convenienceof illusbody-frame, so as to permit said axle to be tration, broken awayat points between the swung horizontally to a suitable extent aboutbody-frame and wheels. Fig. 4 is a vertical a point midway of its endswithout its alcentral section through Fig. 3, the hand-wheel lottedwheels G running into the body-frame. 9o 40 shaft and its worm beingshown in elevation The pivotal connection between the bodyand forconvenience of illustration broken frame and rear axle is made at apoint interaway at a point between the worm and handmediate of the endsof the latter and on the wheel. Fig. 5 is a front end elevation of thelongitudinal middle line of the body-frame, portion of the machine shownin Fig. 3. Fig. and as a convenient way of pivoting said- 5 5 6 is adetail View mainly representing in permembers together I have hereinfixed upon spective one of the guide-bearings for the the axle a collarII, having upper and lower rear axle secured to one of the side bars ofvertical pivots h h respectively engaging in the body-frame. 1 bearingsI K on the body-frame. This con- In said drawings, A indicates thewheeled struction of pivot is included in the subject- IOQ 5o body-frameof the machine, and B denotes the matter of my pending application,Serial No.

long scraper-blade, which is arranged below 363,273, filed August 28,1890.

As a means for swinging the rear axle about its pivotal connection withthe body-frame, I arrange in front of said axle a horizontal rotarywinding-shaft L, which is mounted in hearings on the body-frame andarranged transversely to the length of the same. The Winding-shaftconnects with the extended end portions of the rear axle through themedium of chains M or equivalent flexible connections-such, for example,as cables. The chains are so applied to the winding-shaft that when saidshaft isturned either way one of the chains will wind upon the shaft andthe other chain will unwind therefrom. Hence by operating thewinding-shaft one or the other end of the rear axle can be drawnforward, according to the direction in which the winding-shaft isrotated. The winding-shaft can, if desired, be provided with fixedpulleys for the chains, but such devices are not necessary. The chainscan be attached to the rear axle in any suitable waya-s, for example,they can be attached to collarsor clips N, fixed'on the axle.

As ameans for operating the windin gshaft, I provide at a point adjacentto the forward end of the attendants platform P a handwheel shaft Q,having a worm Q arranged to engage a worm-wheel R, fixed on the windingshaft.

The provision of a worm on the hand-wheel shaft engaging a worm-wheel onthe horizontally-arranged winding-shaft affords not only a device ofgreat power for operating the winding-shaft so as to adjust the swingingaxle, but also affords a simple and reliable means for locking thewinding-shaft against rotation. The position of the winding-shaft alsopermits the hand-wheel on shaft Q to be brought within convenient reachof an attendant standing upon platform P, and hence the operator canreadily swing the rear axle while the machine is in operation. The axleis held in position by the chains or other similar flexible connectionsemployed, but is at all times free to respond to the pull of eitherchain, itbein g understood that when the wind ing-shaft is rotated oneof the chains will wind thereon and thereby swing the axle, whilesimultaneously therewith the other chain will unwind, so as to allowoneend of the axle to swing to the rear to an extent proportion-a1 to theforward swing of its other end. The rear axle is guided and steadiedagainst end tilt by the guide-bearings S, which are secured to the underside of the body-frame at or adjacent to its sides, a convenientdisposition of such guide-bearin gs being to bolt them to the side barsa of the body-frame. The guide-bearings are extended sufficiently toprovide between their upper and lower walls a space proportional to thegreatest desired extent of swing on the part of the rear axle, and alsosufficient to permit bearings T for the ends of the winding-shaft to besecured within said guide-bearings at the forward ends of the latter.

upon By operating the winding-shaft the rear axle can be set at variousangles to the length of the body-frame for various purposes. Thus byswinging the rear axle so as to place it oblique to the line ofprogression and out of parallelism with the front axle its wheels willrun to one side until the two axles are again parallel. The body-framewill, however, be now oblique to the line of progression. Thedisposition of the rear wheels to run straight ahead will under suchconditions counteract any side draft, and by adjusting the rear axle, asaforesaid, to aproper extent one of its wheels can be broughtinalignment with one of the front wheels, although the rear axle is muchlonger than the front axle.

The side movement of the body-frame involved in the foregoing alsoserves as a means for changing the position of the scraper-blade.

What I claim as my invention is- 1. The combination, substantially ashereinbefore set forth, in a machine for making and repairing roads, ofa four-wheeled bodyframe pivotally supported upon front and rear axles,a diagonally-adjustable scraperblade carried below the body-frame andarranged to extend across the space between the front and rear wheels,and a horizontallyarranged rotary winding shaft supported the body-frameand connected with the end portions of the horizontally-swinging rearaxle by chains or like flexible connections arranged to respectivelywind upon and unwind from is operated so as to adjust said axle, for thepurpose described.

2. The combination, substantially as hereinbefore set forth, in amachine for making and repairing roads, of a four-wheeled bodyframepivotally supported upon the front and rear axles, adiagonally-adjustable scraperblade carried below the body-frame andarranged to extend across the space between the front and rear wheels, arotary windingshaft supported upon the body-frame and connected with thehorizontally-swinging rear axle by chains or like flexibleconnectionsarranged to respectively wind upon and unwind from thewinding-shaft when the latter is rotated so as to adjust said axle,an-dagear for operating the rotary winding-shaft, for the purposedescribed.

3. The combination, substantially as hereinbefore set forth, in aroad-making and roadrepairing machine provided with a wheeled body frameand a diagonally adjustable scraper-blade carried below the body-frameand arranged to extend across the space between the front and rearwheels, of a horizontally-swinging rear axle pivotally connected thewinding-shaft when the latter v between its ends with the body-frame,guidebearings S, secured to the body-frame and providinghorizontally-arranged guid eway's, through which the end portions of therear 455,704 v V p 3 like flexible connections and journ'aledin wheelshaftconnectedwith the Winding-shaft 1o bearings in said guide-bearings.by a gear, and a bearing K, secured to the 4. The combination,substantially as herebody-frame and providing bearings both for inbeforeset forth, in a machine for making the lower end of the hand-wheel shaftand a and repairing roads, of the l1oriz0ntally-s\vi1 1gpivot on therearaxle.

ing rear axle pivoted betweentits ends to'the MORTON G. BUNN ELL.body-frame of the-machine, the rotary Wind- WVitnesses: ing-shaftconnected with the rear axle by H. G. KENNEDY,

chains M or like flexible connections, ahand- CHAS. G. PAGE;

